Mercurial > hg > Members > anatofuz > growsync
changeset 0:c0a01cfbf234
init project
| author | anatofuz <anatofuz@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Wed, 08 Apr 2020 07:09:03 +0900 |
| parents | |
| children | 76695bcbe426 |
| files | LICENSE README.md cmd.go cmd/growsync/main.go go.mod go.sum growsync.go version.go |
| diffstat | 8 files changed, 175 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/LICENSE Wed Apr 08 07:09:03 2020 +0900 @@ -0,0 +1,22 @@ +Copyright (c) 2020 AnaTofuZ + +MIT License + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/README.md Wed Apr 08 07:09:03 2020 +0900 @@ -0,0 +1,32 @@ +growsync +======= + +[][actions] +[][coveralls] +[][license] +[][godoc] + +[actions]: https://github.com/AnaTofuZ/growsync/actions?workflow=test +[coveralls]: https://coveralls.io/r/AnaTofuZ/growsync?branch=master +[license]: https://github.com/AnaTofuZ/growsync/blob/master/LICENSE +[godoc]: https://godoc.org/github.com/AnaTofuZ/growsync + +growsync short description + +## Synopsis + +```go +// simple usage here +``` + +## Description + +## Installation + +```console +% go get github.com/AnaTofuZ/growsync +``` + +## Author + +[AnaTofuZ](https://github.com/AnaTofuZ)
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/cmd.go Wed Apr 08 07:09:03 2020 +0900 @@ -0,0 +1,12 @@ +package growsync + +import ( + "context" + "io" +) + +type cmd interface { + name() string + description() string + run(context.Context, []string, io.Writer, io.Writer) error +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/cmd/growsync/main.go Wed Apr 08 07:09:03 2020 +0900 @@ -0,0 +1,23 @@ +package main + +import ( + "context" + "flag" + "log" + "os" + + "www.cr.ie.u-ryukyu.ac.jp/hg/Members/anatofuz/growsync" +) + +func main() { + log.SetFlags(0) + err := growsync.Run(context.Background(), os.Args[1:], os.Stdout, os.Stderr) + if err != nil && err != flag.ErrHelp { + log.Println(err) + exitCode := 1 + if ecoder, ok := err.(interface{ ExitCode() int }); ok { + exitCode = ecoder.ExitCode() + } + os.Exit(exitCode) + } +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/go.mod Wed Apr 08 07:09:03 2020 +0900 @@ -0,0 +1,5 @@ +module www.cr.ie.u-ryukyu.ac.jp/hg/Members/anatofuz/growsync + +go 1.13 + +require github.com/pkg/errors v0.9.1
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/go.sum Wed Apr 08 07:09:03 2020 +0900 @@ -0,0 +1,2 @@ +github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4= +github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/growsync.go Wed Apr 08 07:09:03 2020 +0900 @@ -0,0 +1,74 @@ +package growsync + +import ( + "context" + "flag" + "fmt" + "io" + "log" + + "github.com/pkg/errors" +) + +const cmdName = "growsync" + +var ( + subCommands = []cmd{} + dispatch = make(map[string]cmd, len(subCommands)) + maxSubcommandName int +) + +func init() { + for _, r := range subCommands { + n := r.name() + l := len(n) + if l > maxSubcommandName { + maxSubcommandName = l + } + dispatch[n] = r + } +} + +// Run the lectable +func Run(ctx context.Context, argv []string, outStream, errStream io.Writer) error { + log.SetOutput(errStream) + nameAndVer := fmt.Sprintf("%s (v%s rev:%s)", cmdName, version, revision) + fs := flag.NewFlagSet(nameAndVer, flag.ContinueOnError) + fs.SetOutput(errStream) + fs.Usage = func() { + fmt.Fprintf(fs.Output(), "Usage of %s:\n", nameAndVer) + fs.PrintDefaults() + fmt.Fprintf(fs.Output(), "\nCommands:\n") + formatCommands(fs.Output()) + } + ver := fs.Bool("version", false, "display version") + if err := fs.Parse(argv); err != nil { + return err + } + if *ver { + return printVersion(outStream) + } + + argv = fs.Args() + if len(argv) < 1 { + fs.Usage() + return errors.New("no subcommand specified") + } + rnr, ok := dispatch[argv[0]] + if !ok { + return errors.Errorf("unknown subcommand: %s", argv[0]) + } + return rnr.run(context.Background(), argv[1:], outStream, errStream) +} + +func printVersion(out io.Writer) error { + _, err := fmt.Fprintf(out, "%s v%s (rev:%s)\n", cmdName, version, revision) + return err +} + +func formatCommands(out io.Writer) { + format := fmt.Sprintf(" %%-%ds %%s\n", maxSubcommandName) + for _, r := range subCommands { + fmt.Fprintf(out, format, r.name(), r.description()) + } +}